The Elbow,boss, cataloged under National Stock Number 4730-01-377-6731, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is C-Tech Industries Inc. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-377-6731 |
| Primary Part Number | 644750 |
| Item Name | Elbow,boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | C-Tech Industries Inc |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES |
| Nominal Thread Size | 0.250 INCHES ALL ENDS IN |
| Surface Treatment | ZINC OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 644750 PRIMARY | C-Tech Industries Inc (USA) |
NSN 4730-01-377-6731 is a Elbow,boss, manufactured by C-Tech Industries Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-377-6731 has 1 manufacturer part number on file: 644750 (C-Tech Industries Inc).
Key specifications for 644750: Flow Angle: 90.0 DEGREES; Nominal Thread Size: 0.250 INCHES ALL ENDS IN; Surface Treatment: ZINC OVERALL. 3 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.